Verifying Coordination in Parallel Coding Agents: NP-Bench and a Scheduling Planner
A planner that lifts clean-integration from 1/9 to 9/9 scenarios and cuts merge conflicts from 13 to 0, with a gap that grows in the number of agents, and reports a negative result: routing facts to agents does not rescue long-context accuracy at window-fitting scales; its value is cost and capacity, not attention.